@article{GDZPPN002082780,
title = {On two characteristic properties of Euclidean norms.},
journal = {Elemente der Mathematik},
volume = {46},
year = {1991},
pages = {111-115},
zbl = {0741.15020},
url = {http://dml.mathdoc.fr/item/GDZPPN002082780}
}
Rummler, H. On two characteristic properties of Euclidean norms.. Elemente der Mathematik, Tome 46 (1991) pp. 111-115. http://gdmltest.u-ga.fr/item/GDZPPN002082780/